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Finding the Fourth Proportional to 443,867, 612,538.62 and 242,663

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Solution

The fourth proportional to 443,867, 612,538.62 and 242,663 is: 334,876.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,867 : 612,538.62 = 242,663 : x
  2. Step 2: Convert to fraction form
    443,867/612,538.62 = 242,663/x
  3. Step 3: Cross multiply
    443,867x = 612,538.62 × 242,663
  4. Step 4: Simplify right side
    443,867x = 148,640,459,145.06
  5. Step 5: Solve for x
    x = 148,640,459,145.06/443,867
  6. Step 6: Final answer
    x = 334,876.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.